The verified answer to “Important Battles question: The Battle of Waghur (1818) during British operations against the Pindaris - who were the Pindaris?” is Mercenary plunderers associated with Maratha armies who looted central India, option B. The source-backed, question-specific record explains: The Pindaris were bands of irregular horsemen and plunderers who raided across central India in the early 19th century. They were loosely associated with the Maratha armies and raided British and Indian territories. The British launched the Pindari War (1817-18) simultaneously with the Third Anglo-Maratha War to destroy them. This evidence establishes the historical relationship required in this Important Battles item. A correct solution must preserve the exact battle, date, participants, commander, location, outcome or significance requested by the stem. Similar periods, genres or national traditions do not make two battle facts interchangeable. Option B gives Mercenary plunderers associated with Maratha armies who looted central India and satisfies every condition stated in the question. The remaining choices—Regular Mughal soldiers, Portuguese pirates and Sikh irregulars—do not satisfy the complete requirement. The reliable checking method is to identify the named battle first, recall or verify its verified participant or outcome, and then read qualifiers such as “both works,” “original language,” “first published,” “correctly matched” or “incorrectly matched.” These qualifiers determine what counts as the answer. Replaying that method for this Important Battles question confirms Mercenary plunderers associated with Maratha armies who looted central India without relying on option position.